Work it out using your own figures. Take the number of hours you spend each month rewriting and reformatting existing material. Multiply that by your own full-rate hourly rate. Divide that by the number of pieces you actually publish that month.
The denominator is therefore the number of articles published per month, not the number of hours. Here’s a sample calculation, purely by way of illustration: six hours multiplied by ninety euros equals 540 euros; divided by four published articles, that works out at 135 euros per article.
So the denominator is published pieces per month, not hours. Worked example, purely illustrative: eight hours of your product marketing manager, at seventy-five euros, is €600, divided by three published pieces, is €200 per piece.
So divide by the number of published pieces, not by the hours. An illustration, not a measurement: you and your sales manager put eight hours a month into content, at 85 euros that is 680 euros, divided by two pieces that actually went live, is 340 euros per piece.
So the denominator is published pieces per month, not hours. Worked example, purely for illustration: eight hours of your solution architect, at €85 cost per hour, is €680, divided by two published pieces, is €340 per piece. And those were hours you could have billed.
So the denominator is the number of pieces published per month, not the number of hours. A worked example, purely as illustration: eight hours from your head of engineering, at 95 euros, is 760 euros, divided by two published application stories, is 380 euros per piece.
Enter your own two figures and you’ll have your cost price per publication.